I will say one big factor that helped convince me to lean toward the Wirehaired Dachs. I coon hunted a fair amount in my younger days and have been dragged through the brush by many a big coonhound! The Labs and GSP's as well as many other large breeds often times work out well for tracking. Some are really outstanding. I'm just not enthralled by being pulled through a tangle of briars, downed limbs, and multiflora rose by anything larger than about 23 pounds! And beleive me, when the trail is hot, they will ALL pull. We have had some hellacious tracks in the last two seasons due to tornado and ice storm damage. Now if you live in bad snake country, or you are in Texas where dogs can track off-leash, the larger breed may be the ticket. And thats coming from someone who was always a "Big Dog" guy! I think if I didn't have Fred I would be leaning toward a Jagdterrier or a Jack Russel. But,in my limited experience with them, they don't posess as cold of a nose as the Dachs. In Europe to earn the blood trailing titles they are required to do a 20 hr and 40 hr aged trail. They also do a "scent shoe" trail using only hoof scent. If a dog is capable of that, it makes those overnight 12 hour tracks a cakewalk. The Jeanneaney book also has some great reference into breed selection. Not to offend anyone, but I don't buy too much into the theory that "any old dog will track if trained". If that were the case everyone would have old shep lined out for tracking his deer. There is a tremendous difference in taking the family pet out an hour after a deer is shot, and a dog that can take a track that's half a day old that has been criss crossed by live critters of all type and variety and put a dead deer at the end of it. JMHO- FWIW- CKruse